<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>3.html</h1>
    <a href="2.html">test1</a>
    <a href="2.html" target="f4">test2</a>
    <a href="javascript:;" onclick="parent.location='2.html'">test3</a>
</body>
</html>